Expansion feed roller



J. WEGNER. EXPANSION FEEDROLLER. APPLICATION HLED MAR. 3, |921.

2 SHEETS-SHEET l.

Suva/nto@ y Patented Jan. 3,1922.

J. WEGNEH.

EXPANSION FEED ROLLER. v APPLICATION HLED MAa.s,1921.

,2 SHEETS-SHEET 2.

ing is a specification.

narran stares PATENT erster..

JULIUs wneivnn, or Nnw'roninn. Y., assrenoiiu rro sranonn Mncirnnco., A oo-` l ranrnnnsnir consisrrnaor HENRY sriinonn AND WALTER w. sPAnoNE.

EX'rAivsroN FEED nomina.

inem/ee. 1

To all whom z'z may concern Be it, known .that l, JLiUs WEGNER, a citizen ofthe United States, and resident of the borough and county of Queens, city and Stateof New York, have invented certain new andfuseful Improvements in EX- paiision Feed Rollers, of which the followinvention relates tov feed rollers and more particularlyto feed rollers for feeding webs of material and has for itsobject to provide a simplified and efficient construction whereby the diameter of said roller, either throughout itsentire length vor at any one'or more points thereof, may be increased or diminished within certain limits. ,It is veryoften the" case, because of unevenness in the dimensions of a given web of material due to stretch or shrinkage thereof, `to feed such webs` uniformlyvin a lineal direction. For instance inthe case of 'fabric impregnated' with rubber `orsimilarmaterial for use,`for instance, `in con structing rubber rhose and Vpneumatic tires `also in other holds.

and commonly called frictioned l duck, it very often happens that this fabric comes fromthe calendarv rolls either stretched or shrunken atone or both longitudinal edges and more usually at one Aedge thereof. When this is so, difficulty is encounteredl type shown, for, instance, in the Bolton Patent llo. 942,164 of Decemberf7,1909, with the resultthat the resulting cut lsections of said material are uneven and not uniform. IFhe particular purpose .ofwmy invention' is 'to overcome these objections yand difliculties andto provide a feed-roller whichis especially adapted for use in fab ric cutting machines ofthe type. referred to hereinbefore, but which may beruseful Myinvention will be fullydescribed hereinafter and the features of novelty will be pointed Vout in the appended claims. v

Reference is to ,be had tothe accompanying drawings which.y for tlie'purposesof illustration and explanation, show an example of my invention without definingjits limits and in which Figure 1 is an elevai f :tion-of my "improved roller -partly in sec-V tion; Fig. y2fis an end view thereof and Fig. 3 is across-sectional view lon the line 33 of Fig. 1. Y l f `19221. serial No. 449,586.

Forthe purposes of describing the inventiton, it will be assumed thatit is applied to a feed roller only at one end thereof,- it being understood that this isonly an exam'- ple and thatv the device may be duplicated or' located only'at the other end of theroller or at intermediatev points thereof. The roller 10 may be of any desireddimensions and constructed of any suitable material and, as; shown, isnmountediipon a shaft 11 by mean-s of spiders 12, the shaft 11 being journaled in 'bearings 1,3 forming part of a support which, in thepresent instance, `is shown in the form of a 'frame 14. Theroller 1() is split at one end at'interv'als throughout its Patented Jan. e, 1922. i

circumference, as indicated in 3, the i splits 15 extending from said one endk ini wardly. and terminating, for instance, kin proximity toone of the spiders 12 whereby i a seriesof segments 15hI are fornfed, as shown in Fig. 1. The device whereby the diameterv of the roller is varied at thesplit end comprises a series of members 16 located within the roller and each connected with one of the splitV segments ofv said'froller, for instancefby vmeans of rivets or similar fastening devices 17. The members 16 extend radially inward Afrom ythe inner surface of the roller and have their inner ends'formed with bearing members 18 f movably located be-v tween an annular flange 19 and a collar 20 fixed on a preferably reduced portion of they shaft 11., `The memb`s`l`16 are -further formed with arms 21 which divergeoutwardly toward the end 'of the roller and engage the inwardly converging surface of .an operating cam member 22, the angles of inclinationof the arms 21 yand the converging surface ofthecam member 22 being substantially identical, as illustrated in Fig. 1. kThe cam memberi22 is slidably mounted On the aforesaid reduced portion of theshaft 11 and is provided preferably with plates 23 removably secured in position by means of bolts 24 and projecting over'l the arms 21. The cam member may be actuated in any suitable manner to perform itsfunctions; as f Vformedfin the yshaft 11, as shown iii-Fig. 1.

rllie rod I25` is connected with the operating cam member 22by means of a projection 27 which extends through a'slot 26a formed in the shaft 11 and of suiiicient length to perllO .l

mit the' necessary operative,movements of thefparts without interference. At its outer end, which islocated exteriorly beyondthe shaft 1l, the rod is pivotally and rotatably connected at 28 witha fork 29 forming part j of or carried by a hand lever 30 preferably provided witha handle 31 te facilitate they ymanipulation thereof.V The leverV 30 is pivi,k oted at'32 upon a bracket 33 which isiiXed ".10v

upon the framelli and in itfspreferred form carriespan indicating pointer or -the like '34 movable inz'anfarc adjacent and in co-opera tive "relation to a scalefplate rigidly mounted upon'said frame 14, as shown inVV l samein an adjusted position; the scale plate,

in addition, mayfbe provided with suitable v signs such as plus and minus, to visibly in-Y mustvbe operated to producev .expansion or dicate the direction in'which the ,lever 30 contraction respectively in the Vcircumference of the 4roller l0. i y .L

y In.` practice, the parts normally occupythe positions; shown in Fig. 1,k which may be termed theneutral positionvand in which Vthe rollergis of even diameter throughout or, in other words, is of normal diameter at the end where the expanding Vdevice is located in the illustrated form. vIf the lweb of material which is being fed over the rollerV has become stretched' along that edge whichjpassesover andin proximityto the splitend of the rollerflO, the lever`33 is pivotally .moved Vto shift the pointer 34 tof wardthe left in Fig. lto .a predetermined designation uponvthe scale3 5. `This causes the upper end of said lever 30fto move Vto-y ward the right in Fig. ly and tocoirespondingly shiftthe rod 25 inY and relatively vto Vthe shaft 1L `V-'l`hefprojection 27 partaking Vof thisgslidinginovement of the rod 2.5k consequently slides the operating cam memberY 22 alsoY tothe right in Fig. l and exerts a camniiiig action upon the arms 21' whereby ytheflatterztre forced radially outward and by similarly moving the split segments 15a increase *the diameter -of the roller Vat said end to the `extent 'indicated by the designation onV the scale towhich the pointera has been shifted. This increase lin the diam.- eter of saidV roller is suiiicient to take upjor compensate for theY- increased length or `stretch ofthe web at the edge thereof andV consequently .brings about perfectly straightand even feed of the fabric. If a contraction or arediiction ofthe diameter t VV1,402,726

`of the roller l0 is desired, the handle 3l yis moved tothe ri'ghtjin F ig. l, thereby swinging the upper end of theV lever '30 'to the left y in said gureiand withdrawing the rod 25 somewhat'from the recess Y26 and carrying the projection 27 along. The operating cam member'22, as a resultiof this. is also moved upon the shaft ll .towardthel left in Fig. 1 and thereby permits" the members '16 and itheir arms 2l, undertheinherent resiliency of the segments l5a of said roller, to` inove `radially inward. Vlf the desired contraction in thecircuinference of the roller is beyond Y its normal diameter, the plates 23, by reason ofV a continuedmovement toward theV leftofthe member 22,`will exert a pressure upon .the arms whereby said members 16 willbe moved,inwardly to a greater extent to reduce the diameterofisaid roller a distance corresponding Vto the designation to which the pointer 34 has been moved. The latter operation is required if, for any reason, thev fabric is'shrunkenzalong the aforesaid edge or, in other words', is of lesser linealv length Y than :the body thereof; this difference is taken up and vcompensated for'by theafore` said reductionrin therrollers circumference.

The'device 'is simple in construction and t eicient in operation, and requires no skilled attention either in its operation or initsfin l stallation. hileV the invention isparticularly' useful in: connection with cutting ma! chinesl ofthe type referred to herefinb'efore vand which are commonly termed bias vcut- Kters, it will Vbe apparent that said invention may find utility in a greatfmany other fields'. The descriptionxand illustration are, therefore,to be Vtaken merely as aneirample and are not toV beconstiued as defining the limits of `said* invention. i j j Y Various changesin the specific construction shown Vand described may be made within the* scope of lthe claims withoutrdeparting fromthe spirit of ,my invention] l. The combination of a roller split at in- Y tervals in an axial direction to form indeV pendentV segments ,s comprising integr-al extensions of the main body offsaid roller,`V a shaft carryingsaid roller, means having a fixed connection` with saidsegments and mounted upon saidshaftfso as to be radially movable relatively thereto, and means mov# iisvr ablejlengthwise of said shaft whereby said j first means is actuated radially to vconcurroller in directions toward and away from saidshaft. r Y f 2. The combinationjof a roller provided I 1'20 lrently adjust said segments on their points y `of connection with the main body of said at its one end with a pluralitybffinwardly extending :splits-forming a series of Velastic segments comprisingintegral extensions of the main body of v Said roller. a shaftcarry-f ing said roller, a vplurality of members each to be radially movable relatively thereto, an

operating member slidably mounted on said shaft, cofoperatingmeans on said operatingk member and on said plurality of members whereby the latter are coincidentally actul ated in radial directions to adjust said segments in a `manner to provide a progressive variation in the outer circumference of said rollers from the fixed ends of said segments to the free ends thereof and manually operated means whereby said operating member is actuated.

3. yIhe combination of a roller provided with a plurality of splits at its one end to form a series of resilient segments comprising integral extensions of the main body of said roller, a shaft carrying said roller, members secured to said segments and mounted upon said shaft so as to be radially movable relatively thereto, outwardly diverging arms on said members, an operating member slidably mounted upon said shaft and co-operating with said arms to radially adjust said members whereby said segments are adjusted to provide a progressive variation in the outer circumference of said roller from the fixed ends of said segments to the `free ends thereof and means including a pivoted lever mounted externally of said roller for shifting said operating memben el. rThe combination of a roller provided with va plurality of splits at its onev end to vform a series of elastic segments, a shaft carrying said roller, members secured to said segments and' mounted upon said shaft so as to be movableradially relatively thereto, outwardly diverging arms carried by said members, a cam member slidably mounted on said shaft and havingan inwardly converging surface co-operating with said arms to radially move said members whereby said segments are adjusted to vary the outer circumference of said roller, a rod'slidable lengthwise of said shaft, a connection between said rod and said cam member, a pivoted lever connected with said rod for shifting the same to operate said cam member, a fixedscale and a pointer on said lever co-operatingvwithsaid scale to indicate the extent of movement of said lever. v

ln testimony whereof I have hereunto set my hand.

- JULIUS WEGNER. 

